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Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/handler_alloc_helpers.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/handler_alloc_helpers.hpp | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/handler_alloc_helpers.hpp b/3rdParty/Boost/src/boost/asio/detail/handler_alloc_helpers.hpp new file mode 100644 index 0000000..bfc918b --- /dev/null +++ b/3rdParty/Boost/src/boost/asio/detail/handler_alloc_helpers.hpp @@ -0,0 +1,258 @@ +// +// handler_alloc_helpers.hpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#ifndef BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP +#define BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include <boost/asio/detail/push_options.hpp> + +#include <boost/asio/detail/push_options.hpp> +#include <boost/detail/workaround.hpp> +#include <boost/asio/detail/pop_options.hpp> + +#include <boost/asio/handler_alloc_hook.hpp> +#include <boost/asio/detail/noncopyable.hpp> + +// Calls to asio_handler_allocate and asio_handler_deallocate must be made from +// a namespace that does not contain any overloads of these functions. The +// boost_asio_handler_alloc_helpers namespace is defined here for that purpose. +namespace boost_asio_handler_alloc_helpers { + +template <typename Handler> +inline void* allocate(std::size_t s, Handler* h) +{ +#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) + return ::operator new(s); +#else + using namespace boost::asio; + return asio_handler_allocate(s, h); +#endif +} + +template <typename Handler> +inline void deallocate(void* p, std::size_t s, Handler* h) +{ +#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) + ::operator delete(p); +#else + using namespace boost::asio; + asio_handler_deallocate(p, s, h); +#endif +} + +} // namespace boost_asio_handler_alloc_helpers + +namespace boost { +namespace asio { +namespace detail { + +// Traits for handler allocation. +template <typename Handler, typename Object> +struct handler_alloc_traits +{ + typedef Handler handler_type; + typedef Object value_type; + typedef Object* pointer_type; + BOOST_STATIC_CONSTANT(std::size_t, value_size = sizeof(Object)); +}; + +template <typename Alloc_Traits> +class handler_ptr; + +// Helper class to provide RAII on uninitialised handler memory. +template <typename Alloc_Traits> +class raw_handler_ptr + : private noncopyable +{ +public: + typedef typename Alloc_Traits::handler_type handler_type; + typedef typename Alloc_Traits::value_type value_type; + typedef typename Alloc_Traits::pointer_type pointer_type; + BOOST_STATIC_CONSTANT(std::size_t, value_size = Alloc_Traits::value_size); + + // Constructor allocates the memory. + raw_handler_ptr(handler_type& handler) + : handler_(handler), + pointer_(static_cast<pointer_type>( + boost_asio_handler_alloc_helpers::allocate(value_size, &handler_))) + { + } + + // Destructor automatically deallocates memory, unless it has been stolen by + // a handler_ptr object. + ~raw_handler_ptr() + { + if (pointer_) + boost_asio_handler_alloc_helpers::deallocate( + pointer_, value_size, &handler_); + } + +private: + friend class handler_ptr<Alloc_Traits>; + handler_type& handler_; + pointer_type pointer_; +}; + +// Helper class to provide RAII on uninitialised handler memory. +template <typename Alloc_Traits> +class handler_ptr + : private noncopyable +{ +public: + typedef typename Alloc_Traits::handler_type handler_type; + typedef typename Alloc_Traits::value_type value_type; + typedef typename Alloc_Traits::pointer_type pointer_type; + BOOST_STATIC_CONSTANT(std::size_t, value_size = Alloc_Traits::value_size); + typedef raw_handler_ptr<Alloc_Traits> raw_ptr_type; + + // Take ownership of existing memory. + handler_ptr(handler_type& handler, pointer_type pointer) + : handler_(handler), + pointer_(pointer) + { + } + + // Construct object in raw memory and take ownership if construction succeeds. + handler_ptr(raw_ptr_type& raw_ptr) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2, a3)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3, typename Arg4> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3, Arg4& a4) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2, a3, a4)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3, typename Arg4, + typename Arg5> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3, Arg4& a4, + Arg5& a5) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2, a3, a4, a5)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3, typename Arg4, + typename Arg5, typename Arg6> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3, Arg4& a4, + Arg5& a5, Arg6& a6) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2, a3, a4, a5, a6)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3, typename Arg4, + typename Arg5, typename Arg6, typename Arg7> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3, Arg4& a4, + Arg5& a5, Arg6& a6, Arg7& a7) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type(a1, a2, a3, a4, a5, a6, a7)) + { + raw_ptr.pointer_ = 0; + } + + // Construct object in raw memory and take ownership if construction succeeds. + template <typename Arg1, typename Arg2, typename Arg3, typename Arg4, + typename Arg5, typename Arg6, typename Arg7, typename Arg8> + handler_ptr(raw_ptr_type& raw_ptr, Arg1& a1, Arg2& a2, Arg3& a3, Arg4& a4, + Arg5& a5, Arg6& a6, Arg7& a7, Arg8& a8) + : handler_(raw_ptr.handler_), + pointer_(new (raw_ptr.pointer_) value_type( + a1, a2, a3, a4, a5, a6, a7, a8)) + { + raw_ptr.pointer_ = 0; + } + + // Destructor automatically deallocates memory, unless it has been released. + ~handler_ptr() + { + reset(); + } + + // Get the memory. + pointer_type get() const + { + return pointer_; + } + + // Release ownership of the memory. + pointer_type release() + { + pointer_type tmp = pointer_; + pointer_ = 0; + return tmp; + } + + // Explicitly destroy and deallocate the memory. + void reset() + { + if (pointer_) + { + pointer_->value_type::~value_type(); + boost_asio_handler_alloc_helpers::deallocate( + pointer_, value_size, &handler_); + pointer_ = 0; + } + } + +private: + handler_type& handler_; + pointer_type pointer_; +}; + +} // namespace detail +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#endif // BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP |